Normalization is a process of organizing data in a database to reduce redundancy and improve data integrity. It eliminates data duplication and ensures data consistency.
There are three normal forms:
Normalization improves data integrity, reduces redundancy, and simplifies data management.
It ensures that data is consistent and that there are no data inconsistencies. This also improves the performance of queries.
Let's say we have a product table:
ProductID | ProductName | Price | Category
------- | ----------- | ----- | --------
1 | Laptop | 1200 | Electronics
2 | Tablet | 300 | Electronics
3 | Phone | 800 | Electronics
Without normalization, we'd have redundant data for product ID, name, and price.
Normalization would create a separate table for products, with a primary key for each product.
In the next step, we will be calculating the normalization ratio.Ready?Continue?